Mercer



PATENTED JUNE 4, 1907.

P. D. MERGER, TENSION REGULATING MEANS FOR BELTS.

APPLIOATION FILED DEO.14=. 1904. RENEWED MAYZ. 1907.

3 SHEETS-SHEET 1.

No. 855,899. I PATENTED JUNE 4. 1907 TE. 11 MERGER.

'TENSIQ'N REGULATING' MEANS FOR BELTS.

APPLICATION FILED'DEO.14. 1904. RENEWED MAY 2.1907.

3 SHEETS-SHEET 2v f IRVfLlM/ PATENTED JUNE 4, 1907.

1?. D. MERCER. TENSION REGULATING MEANS FOR BELTS.

APPLICATION FILED D3014 1904. RENEWED MAY 2, 1807.

' 3 SHEETS-SHEET 3 Y? fin 661$ @w.

I AM 4 Be it known that I, ME GER, of'Toronto-Junction, in the county FREDERICK D} MERCER. or TORONTO-JUNQII-OM1ONTARIO, CANADA.

- TE'NS'ION-FIE'GUL'ATING meansea BELTS.

Specification of Patent.

' Patented June 4, 1907;

Application filed Decembei 14, 1904. Renewed m 2, on. s em 30/371,511.

To alt whom it 'may'cpit aemu FREDERICK D NCAN York and Province of Ontario, Canada, have invented certain new and useful'Improvements in Tension-Regulating Mcansfor Belts; and I hereby declare that the followthesame. v

{Thisinvention'relates to a tension reguilating means, for a belt, apron or like device,

which will automaticallyoperate to mainthe combinationsand arrangements herei n fiafter described and'specifically pointedout.

1n .the appended claims.

rial, andby so doing malntain them'at substantially uniform tension so that there will;

be no noticeable variation of the load on the motive power.

" For a full understanding of the invention reference is to be had to the following description and to the accompanying drawings in. which the tension regulating means- Fig. 2is a pers ective view of a-portion of a. belt showe tension regulating means and a means whereby the connecting- -members. can be -.-'leng.thened' or shortened. Fig. i2 is a sec- ""tional view showing howthe tension regu'lat means is attached to a continuous'belt; Fig; 3is a perspective view on a larger scale than in the preceding views which connectin members can-belengthenedv or-shortened. jig. :4 -iS a plan view of a belt-showingthe spring of the tension regu-' lating means in section. Fig. 5-is a per .spective view of a portion of a belt and the tension regulating means 'on' a larger scale V than in the preceding views. Figl -6is a sectional view of the construction shown in Fig. 3. Fig. 7is a perspective view of the binder for locking the connecting memberin its adjusted position. 8 is a perspective ing is a full, clear, and exact description of' tain the belt or apron at a substantially unilike.

I v iorrn ten'sion;and it consists essentially of I It has been demonstrated in the of 'ments (Z, d, d and d I I, i 1. actual operation that the tensionof all classes 5 'the contraction and expansion of the mate its ends, caps h,

Figure 1 is a perspective vieiv of abelt and v p o I end to the guide element d and th s .ing member extends from the fastenin 'eleslid 5513* en e: man

of a means by.

' tached to the 'view'ofequivalentior thespring shown the preceding views.

Fig.9 is a perspective view ofa narrow belt showing-the use of the .bindersdllus'trated in Figs. 3 and 6, and

"Fig; 10 is a perspective view sho the con-- 'nec'ting members "arranged obliquei length ofthe belt.

y to the Like letters of reference refer to likeparts throughout the s ecifications and drawings. .Hereafter in t e specification and claims 'the'termlfibelt shall be construed to include in its meaning belts, aprons, and the IndFig. '1 of the the end se f the belt a are shown to be separated by an inter vening space and tied to ether by theftenarranged-transversely to'- the length of the belt'and located contiguous to one of. the ends thereof. Be-

tween theinter'mediate guide elements it and d is the tension regulator h, disposed transversely to the lengthof thehelt and which niay consist either of an e'xtensile and 'con- ,tractile spring as'shown in Figs. 1-, 2, 2,5, 4 and 5 or other equivalent meanssuchfas an elastic cord, as shown in Fig. 8. the res- 'ent instance i t '1s. shown, more particular 51'- in Fig. '4, to consist of a coiled spring having, at

h and '5 extending into the 'convolutions of the spring for the. attachment thereto 6f the connecting members 9 and g. The connectingmember 9 is attached to a fastening element 7' sec'iiredto the belt a atthe connect;

t 6106p 1 8.. With-,whiclijit.

thenretum'ed through and 1', provided with loops opposite the tension regujlatorfand guide element d. to

a second fastening element jf dined with the" fastening element 9' transversely to the length of the belt. The connecting similarly held by the fastening elements j and j andpasses through-the guide elements (2 and d and" the tension, regulator 71. and around the h... I

The above escribed construction is employed for comparatively wide belts, but for those of a narrow nature as shown in Fig. 9 Y

the connecting after passin through the guide elements (1 members 9 and 5; may be atastening elements 1' and 7' and,

and d may be gonnected to the ends of the I tractile member and connecting one part of the belt to another part; means for attaching the connectin means at one place to the belt, other means lbr slidably attaching the connecting means to thebelt at another place disposed with regard to the first "mentioned place lengthwise of the belt, said last mentioned means being located between the extensile and contractile member and the first mentioned means of attachment, and means for adjusting the connecting means.

5. A tension regulating means comprising a belt, a tension regulator, means connected with the tension regulator and connecting one part of the belt to another part, means for attaching the connecting means at one placeto the belt, and other means for slid ably attaching theconnecting means to the belt at another place disposed with regard to the first mentioned place lengthwise of the belt, and located between the tension regulator and the first mentioned means of attachment, and means for limiting the extending movements of the tension regulator.

6. A tension regulating means comprising a belt, a tension regulator, means connected with the tension regulator and connecting one part of said belt to another part, means for attaching the connecting means at one lace to the belt and arranged to adjust the ength of the connecting means, other means for slidably attaching the connecting means to the belt at another plaee'disposed with regard to the first mentioned place lengthwise 1 of the belt, said last mentioned means being located between the tension regulator and the first mentioned means of attachment, and means for limiting the extending movements of the tension regulator.

7. A tension regulating means comprising a belt, a tension regulator disposed transversely to the length of the belt and intermediate its side edges, connecting means connected with the tension re ulator, fastening means for adjustably attac 'ng the connect-- a belt, a tension regulator disposed 'transversely to the length of the belt, connecting means connected with the ends of the tension.

regulator, fastening means for attaching the connecting means at one place to the belt and other means for slidably attaching the oonnecting'means to the belt intermediate the tension regulator and the first mentioned means of attachment, said last mentioned means of attachment being arranged to limitthe extending movement of the tension regulator.

9. A tension'regulating means comprisinga,-belt, atension regulator disposed transversely to thelength of the belt,- connecting means connected with the ends of the tension regulator, fastening means for attaching the connecting means at one lace to the belt and other means for slida ly attaching'the connecting means to the belt intermediate the tension regulator andthe first mentioned means of attachment, said last mentioned.

means of attachment being arranged to limit the extending movementof the tension regu lator, and means for adjusting the length of the connecting means. v

Toronto, December let, A. D. 1904.

F. D. ERCER Signed in the presence of C. H. RIoHEs, L. F. BROGK. 

